Sergeant's Pet Care Products Pronyl OTC Flea and Tick Spray, Dog/Cat Kills fleas which may cause flea allergy dermatitis Kills brown dog ticks, American dog ticks, lone star ticks and deer ticks for up to 30 days Kills ticks that may transmit Lyme disease, Rocky Mountain spotted fever, ehrlichiosis, babesiosis, anaplasmosis and haemobartonellosis Sprays from all angles